{
  "manageEntity": {
    "action": "Save",
    "entityId": "1076545833",
    "entityType": "Track",
    "nonce": "0xb439167f2e58afe2594611a3f95164abe1a7c1b5ee49adc637a0f804e910ea41",
    "signature": "0x58cc1d880fbc9d8eca6cf0ed740b2ddfdf27549c34fdb712d095cfc17db5e50718a47926c561313427019bcff5f469447a92f2c1e25bc21f5f7a33b7268d887d1b",
    "signer": "0x0168976438910D2f5330323a0d0141Fb4Af95032",
    "userId": "317847"
  }
}