{
  "manageEntity": {
    "action": "Save",
    "entityId": "2025153778",
    "entityType": "Track",
    "nonce": "0x9b7453b54e9148fd2a4e7f2a48ccf74cfc2ebcf6ddb7ca2faf4a3abb9fbb4825",
    "signature": "0xc69b9542b55e7607223b33311c4b23696d0b29d1bb2c94221586e2f6a8ba436a42fe2f9aa86e3e75f6f5ecc09159b1009ba38c127a055776e7f40a0f794d143e1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}