{
  "manageEntity": {
    "action": "Save",
    "entityId": "1039272051",
    "entityType": "Track",
    "nonce": "0xe99d00c7369fd321c131e2b5b5c1532c256ff1ed25ad9431c48b6ec49a55d8d9",
    "signature": "0x5e456a155d5be46935c8851d5ccaada04a8b135f2845c87ff2e1d5993afe88ab70fb36fbe92935fa5de0ac18dfeef577bf49942ee488838267b3443fa98c67441b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}