{
  "manageEntity": {
    "action": "Save",
    "entityId": "1078206",
    "entityType": "Track",
    "nonce": "0xa0423936169a68c2f50b361ae69ef1a3ed4621ef80219653d4feadcacfac40c5",
    "signature": "0xa8940ab0667b1091f8a1720815db6b220c7829a488c7ddf69582c5905f270230072fe82922afe82967b828419b193c091be16ef13a0568727de0f131e9cb3d431b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}