{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb39649c71bba617de7be110468457f3eb7e550b72c7edad0a10cbbdd9a7778f7",
    "signature": "0xf8447fc741f415e5834dc9e4f550496e173a757516c17a229eb9523caedcb8c9116643d758a5e99fe5a6b9bdecaf937d61ee12e91daa2f163a9aa724b753d7ca1c",
    "signer": "0xa900b068954c988c4e1FA3E4D25af93c8aD57346",
    "userId": "368319828"
  }
}