{
  "manageEntity": {
    "action": "Save",
    "entityId": "1967161557",
    "entityType": "Track",
    "nonce": "0x60e39ac0b06dca452d51bbdf4a1682b2c8ae574249acc19cb4d069d2b2dd9bfd",
    "signature": "0x66b6208a4cdf208dbd7c07485d32c0ecf9db6cbd8eef4acba242c3f439a5d00018f0f2a1364aab47d885726d98107fbc0ecc2b600a35812cd4298df6eae035841b",
    "signer": "0x3f63f0c8C800cB0fce4712b56b0C69711f0abc82",
    "userId": "627047707"
  }
}