{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73341",
    "entityType": "User",
    "nonce": "0x92bb5607db3b52ca2ded72644fe5c872309d4de134f2ef3387c24445459aff77",
    "signature": "0x0191c76faacc8f8b61c09143e3030747c07536615e12483727a306f595b0be443acaedeb6779342cd6c8b8222b87376d88244278c75d758446d0e250617d4a311b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}