{
  "manageEntity": {
    "action": "Update",
    "entityId": "321868680",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5cce0048c5ae0d2a442eb80365ae4f4f1028096a979b28ffa4fe1fc172ea06ef",
    "signature": "0x68369c95e9d592297ff6c19e7cc796d82c209531bfa765c5e01fec6a02aa2bc9677ca4f86610f8ca5262e5f192ef1b0935683c441e701f5210df0b43479e28e31b",
    "signer": "0xEc3e4604b541f08a18515e33Edc7a3E1f4b24776",
    "userId": "321868680"
  }
}