{
  "manageEntity": {
    "action": "Update",
    "entityId": "544402123",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5b22235b002f28e4c55c84a9e4c9e2362bbdd0135894ee73e0061922c552a4e2",
    "signature": "0xa5eed9754e3ad2d2eca6a0b5d044a6ada76ef261e5b098027775f0076b0cbdf8081360278f0a88dcbe6956fa2c0c24c3f5115b804fd4762dfabdee9e42d1673a1c",
    "signer": "0x7b3BCF6f1c59D6704e4c2B36606a2AeB24333B47",
    "userId": "544402123"
  }
}