{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "871499",
    "entityType": "User",
    "nonce": "0xed9a06d69659b9d6d79d00f0f2c0848ca1ceb20292c281b4e4fd2b9b63210a6e",
    "signature": "0x63743f70e309d0c16b46d9ffc6bcc3886996b395c6a42155e7b75564c03c7aff7be3ff31ebf3a8d0a0ab6330fba245dc47ce952638bc92e344137112bbabf8ab1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}