{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0xb1012dea6e03c27f26909b9457296268b5908bfdd98e4413bce4da0792f24298",
    "signature": "0x5c5d6d5411afe90725fc005a14d74b6d0ba7c03aa78eabb15c475cf93a0ce70172a45ecca78bdba615549dbe5d8a24c69e0b711ffed2efcc8c0da74bf904fae11b",
    "signer": "0x3B15C1247a5CC34F846b88f0E04B262f39b05C1e",
    "userId": "563285188"
  }
}