{
  "manageEntity": {
    "action": "Save",
    "entityId": "1062107187",
    "entityType": "Track",
    "nonce": "0x51c5babafc1b78ce5817610d91a01b79c2f0e952711282454cde9b3b5dfb9a0d",
    "signature": "0x16436705287400bbef13f0e8db4b457b67a87902d89aef3f5e8fd1e86b7b7bd97b7196db3c0f914cc0967e884f590d6fb05c59fc9763ada33ddf8ff5f52230c31c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}