{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870591918",
    "entityType": "User",
    "nonce": "0xa8f959dae2a36247d50f3823b8fcb61a23f05248a1f0df12429ba908ebf63197",
    "signature": "0xad1c8604d16bd506279bb5ea55ea048693bcf2ed160fb3ce7163977e5013981607656a4cb5293d746bd9b9a44b409fd55ffd2190158ac0fa92ec016a7f91be621c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}