{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9f3e64ab5e3c99f9bcdac743f8fc2a6fbeafadeb52c550331b2f270cb4d6afe0",
    "signature": "0xc040dacaa2baf9f8feffbb00175e4917e87eb6bd17242f6040e085552bcdcae04b0cfc8eec8aca234b0eb12e68a69f33bc9391c89bea5dd72e9a804b0068315c1b",
    "signer": "0x6aCFCBd110fC06969fF1e97fBb89f7eF82398842",
    "userId": "683520717"
  }
}