{
  "manageEntity": {
    "action": "Save",
    "entityId": "1714077072",
    "entityType": "Track",
    "nonce": "0x11603d127c6a54c6db5af4f2c967285b7f40d3a6eeea2f92873b21c3b044800a",
    "signature": "0x2759e05e6c3714b430ff88c0eec9193465872b7a5e4f0151d5f225d2498edb1c303af83d4434e1c9162fab7911a56f289cd56bb7f5fa84b7c67d2694d8b1ec341c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}