{
  "manageEntity": {
    "action": "Save",
    "entityId": "1332386401",
    "entityType": "Track",
    "nonce": "0xca90e45c1f0fd848a8810c856d8329091ad00f52be9ebb4cdd99ed8052b6b0e0",
    "signature": "0x756f4793a4cd1813039428d2de1e126f1c7c6c63beb5444be4c09313a30fd9426e5e7803cdb4d55fb8cb84d9719a6fad24682b3f1acdd230511561f451f3d2461b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}