{
  "manageEntity": {
    "action": "Save",
    "entityId": "336872",
    "entityType": "Track",
    "nonce": "0x36afccd38dea9f6945dba26a81e62ef1293371b1181023886bee606dc5c08304",
    "signature": "0x9be3d8fed20a03151c2e99e2879dcb48fc0d44bfe2cc735fd2da6ce606ab403e05802aa537c035e95e9277c0886222bcf24b02c4eddeba81d5bbbb0ae9fe4ad31c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}