{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x33883c23ca6e728178eff389e93d4ce71c894ef03f3aa93491c4153a1d6d4d41",
    "signature": "0xcb8b375ce120a3975a952df1acdbb510d0dfdfa3e6b6a196736000722ca02cf00c99f75b9a33e86bffa31ebed36e2e85f5e720fd58c37b2977cebbfa8be5dac21c",
    "signer": "0x465d67b0d6D755af683ab08c36D13b2E3C272E2d",
    "userId": "903612980"
  }
}