{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "452945244",
    "entityType": "User",
    "nonce": "0x0e5a0aba94b6166841faacd8c23a23a03165b65585bdb530b1718d15509c54ae",
    "signature": "0xd8630ae67975b7fa738d8e664c4b5591bcaa6e155b045d77fa255d6c8bd1723e08a958bcfc602890121d193132c8444948025e441a01d0392d0e43e39cbc2e271b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}