{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1683987",
    "entityType": "User",
    "nonce": "0xb7b320d91ab6d97c2120f21811d08210a810eaa9f2dd294247d4d75bd08b3051",
    "signature": "0x722717fe271a496133e997cde26a75dad5a108fb1cf18f82978c455fb93e346d1530a03380beb064dca6618f9fd7c213a13df025840043ab98292a3afb36c4061c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}