{
  "manageEntity": {
    "action": "Update",
    "entityId": "519102244",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x33f797c3009ac892bc1d9e8de23766132b8da67fc729c4d2c8e2d02ed8d76df0",
    "signature": "0x8908916f49d1dfb9f613efe18f275cbe4c00cd62b12e0981b7c0bfc611c5058506fcc70ba12479b6f1aaddfbb84868dd5d79732305a8906c4542504ba98a0c6b1b",
    "signer": "0x0787f23963feA309FF6D58fCEB3aecb7Cc2785fa",
    "userId": "519102244"
  }
}