{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0x59e480f914d78a10358fec33e682d74b25a0e533b1a5cd48d110309b9411e34b",
    "signature": "0xa0a148d282f9ae4ece4bb3417af81c7f9561dc7e1c62c5f770a8475d057bf63e0d84c55d5a5137c32adfb280821ca794342c23c44d104ef63050fa566b9242a21b",
    "signer": "0x72C3229e8a009963fcCB987460463895a2989d71",
    "userId": "109371348"
  }
}