{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1994482",
    "entityType": "User",
    "nonce": "0x299952925f589b03aba858c90c9e93ae06a5634257ef07e1e1b57682a115ef8f",
    "signature": "0x95286e1c6799d9ac5ea99f2c6dcde19f4ca93b95bebe501c9577cbee5ad35f427dc66521fab4a55d96d0806d7be19256ea723b5ac658fd0fd1d3dc22daeca8381c",
    "signer": "0x9c320C2f7A61EF6f1f62d2eB1a8D2c30dBc29c24",
    "userId": "543327273"
  }
}