{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x196436640dd4df75940fadf634fcad64c76124a221679b2818651ebaf463dfce",
    "signature": "0xd1f94a0ef08d8e6fcd1cad5b7d358a538c77276d0b71f60cf9e8b6b0c628f5fe186cfe29d4747d7b02f8e7ae38a88285d84f4f8a455b1c3a2cf6e5dd18fce35f1b",
    "signer": "0x9dc384F3A658d5014BB7edeb7439D726D7901fd8",
    "userId": "246125521"
  }
}