{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18278",
    "entityType": "User",
    "nonce": "0x05dba8fff435e51e26eab92eab593d53851ce1ed91ed495a8cd9f769c8b0557e",
    "signature": "0x4a4e97b152cb66cf6c1b81ebcb43b4c465ab30e180dc4d6b67686ff1d01de40f4356c85478128a24d4138b85f3e1fa97517be516fa03f94a20fbb4f9c2e20d571b",
    "signer": "0x50f6CF4Abb23DF8B26e12391A5C15e82F15d7Cc0",
    "userId": "644846042"
  }
}