{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778620549",
    "entityType": "User",
    "nonce": "0x435f532d42343f41295db582fe1f7ac532ab429e96b051d4ec712775f579c268",
    "signature": "0x71f2902b4f7e24ff49f1bd601e50293e52250ad31d38b10f3711f2f6d2ed2da31d03dfab0f717a86840967066e463b83b8c8e06dc057cef73f721501ab9e26201b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}