{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "104563",
    "entityType": "User",
    "nonce": "0xa109094db44a6f77a1d9da9a019f383163449a420190aa58d8c3e80194f1bd33",
    "signature": "0x3fd611cb1201f38eb020f1a2c036c362b38e84f18e4ea183b8ba36fff47fd8d81f8dbe3648940ca253be0da5e8397b0e00c4f047fbbb3c9fc41df3e8708ff5651b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}