{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6837",
    "entityType": "User",
    "nonce": "0xefdf1f4dc2a4b841f68648c666f9310c001c1d66677d7833ace83d8cd471a70f",
    "signature": "0xab5dddc293897f517eb1c7e9db04436e70393e73b05605949171f9f65e9b3cfc7930baf94ad167648ca7e2a83a3ce5b205ecf7c67d67810d182995a29fea7d081c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}