{
  "manageEntity": {
    "action": "Save",
    "entityId": "1028154593",
    "entityType": "Track",
    "nonce": "0xe95a013b9e05220fee965d0af6b07bffdae085790466f1212115f77ab530ad80",
    "signature": "0x5beb80dae3c8cc9e87ad4cb0d6a9b59125fd14fe73c638c2e0c4ed0d31e5522b6c02097f3fab8480ffc489c2dec727be79081b714f940298ae92e81b4d28c6c31c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}