{
  "manageEntity": {
    "action": "Update",
    "entityId": "511852300",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x11550bba7b00cd709e22fbd1fbe7ed049fa31e02b8ffcd142f629c1aaf0e2230",
    "signature": "0xc9c52cd744a1eb0e50b6096b8db7c7e28435aed1998b48a449ec5678eee93c957fc999ea7092ce7631600187e8c5cc6bee3f1cdc13f073a8fad74a1d5d2938ee1b",
    "signer": "0xce0095E8E9Bc88bd9bDaB88670ab4f8AAD4457Bc",
    "userId": "511852300"
  }
}