{
  "manageEntity": {
    "action": "Save",
    "entityId": "1027546795",
    "entityType": "Track",
    "nonce": "0x6a010a93addb25a272ec90a5d17eef940ea1f00ebbb58ba0442d87d26df7cfa0",
    "signature": "0x2d239f3338edca60769fda3e29f1da3b1ab99f9de1551af56d29f70659d803e10abdbb4dad153fa475fc902a737488cb4b1a6314a28c7639b0be506b58b3447f1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}