{
  "manageEntity": {
    "action": "Save",
    "entityId": "1760130732",
    "entityType": "Track",
    "nonce": "0xd6ae5a1f5f4f378b0780a421749c0af635a3e0a09b3f3175e5c543f227c5b86a",
    "signature": "0x0d0508d5832349d03a1ff471a59c6401b3989819e19ace90f29cfe735d8681c56761459e6e7edce50196009628debbab4bef203a34094c05f1dd636bd85226f91b",
    "signer": "0x5D012C880480A2E1ab4345f6F374CFf73e040331",
    "userId": "10449019"
  }
}