{
  "manageEntity": {
    "action": "Save",
    "entityId": "951014462",
    "entityType": "Track",
    "nonce": "0x52ff0204364b301e71ba151f55bff86f567db13dcecd16917518e123361c8dc0",
    "signature": "0x46562cf09380d034b759b3a5276246af71c95088a6b9ac2af653973ceb0dad6c15a2fa30736ae1983e8ae7337570869fdcd96c3cbca017a86cfb1e9df1a2f3961b",
    "signer": "0x689Be5c20E6Da52e11A70751E9FaCb05Abbc7805",
    "userId": "676830468"
  }
}