{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x388752ab373b703234ad80a53a27bb96ef4d566f4e97f2a4022ebc23a4a5e4bf",
    "signature": "0x87b476acd3dc15b449d621c0db601f79e111e2521ed96c87591a74446d47520f4b17734e8535e7602b27f7af1a83d3d3f4ee4295f7259fcd91bcd4bf3ea8fe911c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}