{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x89cb916a35087c93c7f9ad5a80bfa79dca8789f8619923f3dad1faf0911e8434",
    "signature": "0x1e958b0a4514bc1f8701820816ffc9633cc2f71efa4267776ca0e93b4a3389bc3d17b609fa1419e3464bdfb21b94a993aa564abf68d95651f37425708739c49d1c",
    "signer": "0x406fd2b6f6C6cC5622Ac1c5799cE4911D81e02a7",
    "userId": "461949730"
  }
}