{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "402520233",
    "entityType": "User",
    "nonce": "0x2d4f89e3ffe963d04292aba48c6c9edc2673a05386ac1432dfee8814d3e8eacf",
    "signature": "0xcede0c0f6c87a0ce1a7037c94c7f07e833f11bc2999dc32d4dc33c21d866068772b5253b12c7a19cf3a0bc98b6d7a886322d8d9cd5832cd752993f78fb5b9a781b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}