{
  "manageEntity": {
    "action": "Save",
    "entityId": "436266076",
    "entityType": "Track",
    "nonce": "0x1b4d0367fb4c9b852828a4a4d83eb06e6bc331e02ae06c33cb6df723eff4836d",
    "signature": "0xe0e904c0ff24ae798b2fcedec9001a5281a0abedb4c7c635a004b2e0961b45421c4704722b6a0f75016eed4ee1d9eb539ae303ebc74077fe9e8da4d955a9c0601c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}