{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x19e4d61c7c4b04ccc6de224fa20700c6d42b5ef62e84fe9b98e9bfffe16d958c",
    "signature": "0xb1fa94da7f9223c71a96b16103f590d0d903a945969f30f354f09b8237904b3d5754a413bc28dd2ce6b2820ae3d96a99a76d4a3a2564e5f8576bbfe749c01bad1c",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}