{
  "manageEntity": {
    "action": "Save",
    "entityId": "1826800777",
    "entityType": "Track",
    "nonce": "0x83d49053ad48d4c30942f6503a102539b2d82d8d0620ac85c44bcff84289baec",
    "signature": "0x1d0b873d1116bf913276bfe4a8036149c2aeec1387d90246257a9d384e12f8235756e36710f3dcef3a24c366c9c19f949a807dab6d46e784d4e18b8674b9d07a1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}