{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "937139185",
    "entityType": "User",
    "nonce": "0x8cc5dfa37fdc8f1ebbf3cd80faa141d42a955559c1daf4e16e3279f4faca704f",
    "signature": "0xdd6a711777894ac3f9c359c481ad5a438a98940773383dac009e921faf88a5ae60301669d2bc476a6fe4e357fc50d072a911c3dd28f3a86465b04ae5232ae8731b",
    "signer": "0x5B83E7748cF8e414B76B16e39d629AA8deDB4616",
    "userId": "604013128"
  }
}