{
  "manageEntity": {
    "action": "Save",
    "entityId": "1006744033",
    "entityType": "Track",
    "nonce": "0xc410d7ae599a6bd35236b48bd4c9f9b1b825689a534781fd6d63fe221e03789e",
    "signature": "0x000a4403d33dc16fa31f3de8f736d5b359b40bdb446e9945994a4ff50a3bceaa22f2072c3b30a5f18cbf10201720db8b4b9da4c1b6200720e183840e9709b6741b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}