{
  "manageEntity": {
    "action": "Save",
    "entityId": "1753173398",
    "entityType": "Track",
    "nonce": "0x0844897232bc3c4ac4f17fd08df49df4bfa56d70eab0afd8d7994faece08e723",
    "signature": "0xb3e2d7115e267b527ee70e5f5db9fe30716871812e7d402e6609699a11d5d76412c26f69a82c626c7ea64e47546597daaab416b9f89ea491cb40e68aab2a0bb11b",
    "signer": "0x9881bA04eA95d8a4De5594aBC9DBd5c96F38eF34",
    "userId": "211307"
  }
}