{
  "manageEntity": {
    "action": "Save",
    "entityId": "775930515",
    "entityType": "Track",
    "nonce": "0x79a0f61e4493bae462250f0d22e3fd2735773ff608ceb24e35e060410b2e923f",
    "signature": "0x20ed9e20cb707b4df3a83cf7e03fa2665f44c6ec9da2af9535162b57009abc744d2971984a27ab1823cd403f7337b1daecfd356d75ddffd52ae6b7032831ab541b",
    "signer": "0x01eB7915E4941D64a8ddf370bE06647ad5F79d4e",
    "userId": "911613164"
  }
}