{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x44a418e99c5a4f810898ea8fc6b41d7f8eaf99164111038ec08b850854732055",
    "signature": "0x7b70e70c0fee7f05ae2e2b4cbe1502aacb8e08b3d559bcb1476f14fc59656a7f5d84099045422f76d262a808a9384ae9d9479672d2e58a6917476648dee1fa3f1b",
    "signer": "0x97A48CDe9eD5Ec07148c100551C5e772f2667403",
    "userId": "28372811"
  }
}