{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "940003920",
    "entityType": "User",
    "nonce": "0x4951ae88d7be396b04b42919784d4f6e80047bf4933cd73916b476f3ecd0f167",
    "signature": "0xa99ede3977bc1ffa75890bca92898e55dc37c00103152dd7de2652da93a771db14b021a1575f9e150f929ca77ce0d259973817b7a78649074e5d6f682021fa131b",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}