{
  "manageEntity": {
    "action": "Update",
    "entityId": "993419817",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraubujj6vzj5r5hesaot2pfllrwcg4jvnljcpqxy2itfk75xbo6pda\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":866860515},{\"type\":\"playlist\",\"playlist_id\":1931477359}]}}}",
    "nonce": "0xb81e63432e72d146fe0fd8e584f3b725dce5511a83f5e2106370982aa44b864f",
    "signature": "0xef7c00347c185b7995939915174fd6eee6f2e33abd25f6d533619213ddafb2ae4175eb79910a717bb5b8a7130ddbdd7c7cff2b6176eb4de0127c3b3daa93eb181b",
    "signer": "0xFcD9d05AC2f057DBbA6efc59814F8C6ac7A18238",
    "userId": "993419817"
  }
}