{
  "manageEntity": {
    "action": "Save",
    "entityId": "1216247048",
    "entityType": "Track",
    "nonce": "0x0ae8c7022ef8b982069b938aa0886e1100353f95ca527482decbb9709b5800fa",
    "signature": "0x6c5efa57269cac748e1f292d29fb220d5967c3b1ab78c4901257fcf1984c91bc28ebf772335094676f6518eaa1fb1bab36995c3d3f0fc6d432da38dcd18109681c",
    "signer": "0xEB85867F957F2FE571521B2EEdBEF6FB4Fd9FA42",
    "userId": "440680049"
  }
}