{
  "manageEntity": {
    "action": "Save",
    "entityId": "788782879",
    "entityType": "Track",
    "nonce": "0xb34159551552e60d045236a34f55a2195a069040b3e87da817b2cdd87472c901",
    "signature": "0x96f38f72c30afd1e1cacfe4e662fbf763899e6bb91b2ab93d0b9eb7cbc54a75835ac35f8f6cec16a17d9d5a1d1b0c0de206c574c7ceda92f184210fa724467861c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}