{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "432118704",
    "entityType": "User",
    "nonce": "0x7460154d5c4c99ea07bed9cdcc2ca396c81c428d9601738927fae5049d0e94fc",
    "signature": "0xe3ea41a1698ad550cc4f25ef3181de164cbc24d8b1f381dc396006123cef9e22767d52e626eb0a2eb3c7d60de41c9c11eba30b59d9bf2e837e686d1b394e0f251b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}