{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b43994bb78ed6b9bfc145ec96244e7c9b50d3a02a125a9db3524843560517a8",
    "signature": "0xa134cbacf10574d5719714720696873a9ae923acf45dbff0fd8eb9a0699764823e257dabf7ca7204e54b6df65dec1aecb3c352cb37b5f4aca82ac2f6920401b61b",
    "signer": "0xf7cb5Bb69a63cFcc4E9FEAB1eD8Ba25fcD527B3e",
    "userId": "976458054"
  }
}