{
  "manageEntity": {
    "action": "Update",
    "entityId": "328640212",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x468e4343a7f0ad143c008f79fd92dfd4fbb61c9cc2f002c4efa567e3369c4ea0",
    "signature": "0x00c92fc87a03bcb28bebea4adb805fa11e81f9dd63041d825f8d7be314df0eae52c933dd943d029abdbe9a88308a62194d324c6ca04e3bbd3a0e4eff44eceb221c",
    "signer": "0x9DA6995C4684B4664a952293cc0a477b3509bE31",
    "userId": "328640212"
  }
}