{
  "manageEntity": {
    "action": "Save",
    "entityId": "2010807460",
    "entityType": "Track",
    "nonce": "0x78c74cbfbe4ce869aa8bda6edbf3bca9d673d80d0ae7f26be7106a2399f4f08d",
    "signature": "0x675960c59878060a2e0a8f543756e1ec1540961364b993883ab0d0c1d2c8de8d285eb92b0f4ff3324c80fd13cfbe1d6c185dd17f1aef676e2d74d684aad2c3f41b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}