{
  "manageEntity": {
    "action": "Save",
    "entityId": "2088669088",
    "entityType": "Track",
    "nonce": "0xb10fa942a9e3f64c98686d4180606a0453e3da32b4a0f467c9c9ec402a013c3c",
    "signature": "0xcf06451cc5c61969bda2b8231a6f4f91705306865d9d8b8cfc34afd6bdb758c14bb2877485b6f4bfce6dd930084333ccfa0848821b0b49257169d62f1ce092781b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}