{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683769",
    "entityType": "User",
    "nonce": "0x5b9c9ee77315c86b166699da6897199e283274592313f99239981db8cc6866ec",
    "signature": "0x83e38ed5cb1c73301abee38e73fc1e7d4af562be983b63eb4193c02e77ec9c8e2093f4e2bf1128ccf4be2cd73315579219ae04baefc6c5cde2d122beb56448701b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}