{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc83d4eb5b12b81064e023a97e2c3507ebc8df3f99d88c3776ac36b04945799e3",
    "signature": "0xcba4b78ed702cb4b7e1bc1b0d18c782f7092bb17906c64952fec1c2ab677ed744b0a271a49ff02a9536375fce1ddaa90229b995c076466bd8c29c4c4eab50da41c",
    "signer": "0xc9EE21D0D541d8d1Ff4Fc82Ee12f95E59f196D1e",
    "userId": "776863300"
  }
}