{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x44779246bdd2d79d2bb32630c115924ee8d192e8affa54021b6a4cebd86b70e7",
    "signature": "0xb985140d943639b794a9329051124ae63e42bbe0c315c4152f415be8c0119f8576b8508a02f7c9e209b81b6f70fbdd81db637dc6132e641e18b6917e59ce918c1b",
    "signer": "0x97Bf0399B8dE4eFd676567151F7439CD02e15F78",
    "userId": "339953346"
  }
}