{
  "manageEntity": {
    "action": "Save",
    "entityId": "694797",
    "entityType": "Track",
    "nonce": "0xf1c92197cd5ab0cedfd0cc1bcdc6aa7a921072ee428b1d3c7d1c887f4db0778e",
    "signature": "0x9468849167e896db740a3a18d4238af98a409b433cf4970289eac2ea2484aaeb6f77dbf767156106669ae90283ae7978f2ee1521cc3671529da520ade937f4a51b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}