{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7d575706c92ec7549d86c163674badf033a900a10fd51b37819bcdfb059d3f9e",
    "signature": "0x7101bf2b880beae17f7823efd35109a7c2f8bcb7001d4be1d81b642ed28d0f423aef01bbe8b68a3b64f750ed8d0fc151da0c683ca3a2899c99104b32d28c10801b",
    "signer": "0x7FCffbc9FB7516A6453F59c5b9918Ea8A7EB33eb",
    "userId": "502388335"
  }
}