{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3030",
    "entityType": "User",
    "nonce": "0xd830aa4d61b14e172df4d59419620714f3a6509ff2ed0bb2734c3e5e017826e3",
    "signature": "0x05622565968bb3079e0ac928c3bcd39eb1a1dfcc36f688436fd7aef2d40cda864c5a977ccc6ba2f2e20ddaf2d215dd355616f48214f72fef9a7cf53811aed4591c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}