{
  "manageEntity": {
    "action": "Update",
    "entityId": "643397556",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1617c89ccac8f846c55d1f3677e109d2d89fbb2d1953187bc56c037746b602f1",
    "signature": "0x0edacdb4822d886fa3161ba67d7d9ee045b4f7c2ffaf641736e01490692e30df459d656bb88bebb45f17658f3612295001044d321f122ce6f3799957f77766851c",
    "signer": "0xA24e4d4bc903e27F12f8Daa482d123f8f03D956b",
    "userId": "643397556"
  }
}