{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x51452e299fd7929a045737455a45ea3945496824c8d6055e212b713f21098a12",
    "signature": "0x75e97fa96a99383eb93fbda5370901d9bd8c18e25b77c7c1f1e88d07c696209331b48ab1be4adbc153cd901aceae52c4be506fd7bc8d954f0566307a4f5b337b1b",
    "signer": "0x3760BfBe7C69EE333b09d46EF90bA86e14EF71b6",
    "userId": "193765969"
  }
}