{
  "manageEntity": {
    "action": "Save",
    "entityId": "272319",
    "entityType": "Track",
    "nonce": "0xb426f0ebcc3da53654288eb6b06041755303ce7a91cefb96ab937f9ed3f9d678",
    "signature": "0xdb717025c648e49e7cebef2de8502f0bcbcae3cd6ad79c6605008187a7714f1d37f7c7470ae0007fc22640be139cbc39265cf9f93a4c9201ee558d3438da9cfd1b",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}