{
  "manageEntity": {
    "action": "Save",
    "entityId": "1033193213",
    "entityType": "Track",
    "nonce": "0x9683522888998b7ef80a6efb73cc87b9b380508d7f078896fa9700b954e1f0fa",
    "signature": "0x937e986fdafa6a88e5e6fc345635d2e54e0cfc3b0a36f9a157cce8b6532152c17278a48f948452b5eb4db447957873947ebb61d8fc61162ee7ed86880137722d1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}