{
  "manageEntity": {
    "action": "Save",
    "entityId": "1093531",
    "entityType": "Track",
    "nonce": "0xbad989fdd446763b1f9d5f96b73099cf2da3be068ad15d3dfc47583295c6436a",
    "signature": "0xf342f1bbc94bc4ed16905232a6bd4a63fa900ea39d20698184a3e5211c76e4af02ab0032648d66e9d6b2d9741608d57d47a7a88e9a0338d36ec8477890b6fd241b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}