{
  "manageEntity": {
    "action": "Update",
    "entityId": "891043539",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaa7ba8736848d05be4ca3e00dcf44f4b69cdc3084dab7d3384c12788c5e6c211",
    "signature": "0xe491e3300088647947f6c995e2a6c1a526929d406e9f17302ab6633cc11d3b3a0438d42d2063e63f35f8a67d212c4d3c711704f8a1a2dea6ef609f0a720e57ff1c",
    "signer": "0x02D488F979a6DD1B8b401E3403B6af7aA52BfC60",
    "userId": "891043539"
  }
}