{
  "manageEntity": {
    "action": "Save",
    "entityId": "1064773269",
    "entityType": "Track",
    "nonce": "0x25ff2c11a636fb8277698c3bf1de469d4ac00a884572aa6bd366e500170686df",
    "signature": "0xc8080be664c40f9f9164939fe565e0bace88691bfcebf76f766653f757a2b38a6fc1b332063e4c687e326fe322b1e006b7557c487ee4c712b98f742a486fa09e1b",
    "signer": "0xE6a2533061175ED4c7f073A7BE3dc4189A4DE47E",
    "userId": "427249190"
  }
}