{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x0de9e805e4b6ae672b4b712c91a1f59dfcf3c2441004005f4fd32120c388c77f",
    "signature": "0x3e0fdf3f65a2c0e6955c0eb1d233ecadd08a2b5032cb4dd53c956794a6ef03f715d173a86459452bc48d8bb4ec84c95da5fd10787cec902a5089f082d66bb1eb1b",
    "signer": "0xb15d7053c985Edf1d74fFc9893ab67Fdc2B33090",
    "userId": "211545300"
  }
}