{
  "manageEntity": {
    "action": "Save",
    "entityId": "1741884960",
    "entityType": "Track",
    "nonce": "0xeeb4da0c40450c0d3f2bd2c0e8b18cfb792adb780bc8fb731634d230711f0662",
    "signature": "0xf10ef4d7c1c4d0fe1aeadaa4343eea5eaae8d6b720b77eb0ee4ed5fb511c36464995e20050d20078b0132faeafd4f0fb83ba78941ff941a7c15d82c189026acc1c",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}