{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987974477",
    "entityType": "User",
    "nonce": "0x5f3345986ffd1f80895269ab7c28e90e2ffab3537444291f5bd88c2d24d003f9",
    "signature": "0xcf378cc3c02cad280374809fd82ef030c0b0946a691c57830a5652e747b422f9460549db05159e2bf672902250f63b2ddb542736a71ec9ebc6969887dba56d1d1c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}