{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755516",
    "entityType": "User",
    "nonce": "0x6f94274baebdab5dce99f731e588358c87601ddd23d7a32ecdd01229aa5c4c53",
    "signature": "0x03c60e84e4e216b5437985d7d316b8156a01c9e5702a9a41ba15480d92499851584166c0f94836333ce4b3aee0716651a73850397ce3238737859e06bf1b9d111c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}