{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1866428",
    "entityType": "User",
    "nonce": "0xbab3be379e09f0f61f6cfa80d48cceaf5bbd00929c4cd1b2e0fdda21668b2b73",
    "signature": "0x017d191d858ecc054e57abc3561ed2cb9af6e3c1e87e96e43f9ce9937b4da7cc28dc704f5dcdb857cdb6a976693cbf4b8a305819c2d87febcf2521be9cd670441b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}