{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190351",
    "entityType": "User",
    "nonce": "0x7fad31fbc35d8e189e63ca28d9ab4604878b513e0d863eca6185ce2622c9890c",
    "signature": "0xaa473542f97b7c9eddff08003dcb61290d88b2f1c66ff9f86d7a19382ccf78194b0d3a50e34cbf7ea72339aafb65f23edb08dda8f1143530a69c3a4c23bcc2811b",
    "signer": "0x5B4a8594975f00b3278cA5447Ea60256718E7BB3",
    "userId": "302311"
  }
}