{
  "manageEntity": {
    "action": "Update",
    "entityId": "905612090",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x489cdf706d549f25c0e1fb1465b71142ac1b6392ca03b14f993b44e57fbb0263",
    "signature": "0x57739198818e48aceae6606e08ae6dfa46c7c77a8fda3822b2a792b15c8eca1f3df448a4e954a62a4ff03044c23cee67ac0ae3ebe9caea1fff1dad3f159d07b01b",
    "signer": "0xFBdcAf407514B80D396bfEE8Cf0E7bd28dc3F02E",
    "userId": "905612090"
  }
}