{
  "manageEntity": {
    "action": "Save",
    "entityId": "1321632977",
    "entityType": "Track",
    "nonce": "0x1b0abd9aaff7584da9d98ed09bb969ddbd57f0c8d80283b9a706f3e67f1fe37e",
    "signature": "0x8b7bfa3651ba4e8c3994be483f038cf5c32526dc6578728ac1d606f520a4902017f6926076b051f12c18597ecbdb334feb50878881cb9d072445e2a7945dfd371b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}