{
  "manageEntity": {
    "action": "Update",
    "entityId": "704289476",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratlyhm4ezl7g3eyebxe7aram2s2x65vthy3ikz7ifl3myil3n2pza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1541969326},{\"type\":\"playlist\",\"playlist_id\":2119502055},{\"type\":\"playlist\",\"playlist_id\":1982640055}]}}}",
    "nonce": "0x4adc62f670b3841927c960a1e045fac2c27ba6471b099d44bc1a2ba967945efd",
    "signature": "0x52b0f107b12537439c466a3fbdf67b1aa58cb4fdfeed6a4708b01f601cb1e5ec26284f91b5b0a94b3268e852efe13bfcd16660c2f5f8b0ae193f0cb23b90eccd1c",
    "signer": "0x16B51B5D818C2b051c1f17EDAE1Ce064E81703cf",
    "userId": "704289476"
  }
}