{
  "manageEntity": {
    "action": "Update",
    "entityId": "583146995",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9646834e8190a1964a3741e6c9f80f835d4ae5c4bd3c9da37202097634f08961",
    "signature": "0x37bd62cc906de5bbc3f586cd2189727c44e8fd8c24a56348381ecfca7c3fe962336537782f4102b33806dfc66b33971511837186ab8ef8715fe8ca7ed37469991b",
    "signer": "0xFb9294627fb41f72bDfDECC8f54CfA5d6aC07098",
    "userId": "583146995"
  }
}