{
  "manageEntity": {
    "action": "Save",
    "entityId": "432928247",
    "entityType": "Track",
    "nonce": "0x78127e3ee33fb01cb4c0bae27749a52c88ce56aafed539a407b1c78b9204aed0",
    "signature": "0x007da9b17766f37355d970163090ff373e604b71fbc3d2f382817cd875f0777808a6ef605909a0d3159488f682a73d7cc323c3557261cbec82bb4a8d815833ba1b",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}