{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5b010672ba9486087570dcaf19bae78da49231cac1b56a4d5931d0a9b0373177",
    "signature": "0x0b2b1bd7a2bac66d38977af4feaf1b6e536f27fe60ec6e33a3f337c984ee7f4c732cf2cd5fccde51cf9329b3a111e7585225dd756cee220a8db01b2a370589291c",
    "signer": "0xA157226125C64634f2fa61C962593D5007afcef0",
    "userId": "18338773"
  }
}