{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77551267",
    "entityType": "User",
    "nonce": "0x5418b503cb6a2388c25664c08d504b04cc37f9bc2209e75cbc7f13d1617ac22f",
    "signature": "0x8fc0709b06da75e393cc0032fc75bac408619dc8b5970af0140a8967834ec0271ccce1eee9de215eaf0b9b6c7cb37a853218ddf73435576afeef98aa8be67db11b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}