{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "338282108",
    "entityType": "User",
    "nonce": "0x6b05464822562bde549d1d1a969c03b66730aac865fd3ee97a7042e16300e4bb",
    "signature": "0xa58e5671a779432df1179c7799b483c2a29eaff112332d1ac69f30b8372a7a7c70d40e1ba962f9c76b587062f28ed1cd334878da6fbaf1bdbe64f99741cfa1f31b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}