{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870",
    "entityType": "User",
    "nonce": "0x250e3a2f8167e183876b1bda601ef559a1c441c5127d276cb21cffd1cbe28506",
    "signature": "0x785eb2d54e4e408af4638c04ea5035ea648aa0ba708cb445200e33c1eee168202b815dcb2e68d956f16a359c5fc04f2ccbd768e56c75a0c92a173a5be7ca2b7d1b",
    "signer": "0xD82Bd74003e6b0E270326eacfb14fa0372EC70D1",
    "userId": "943263428"
  }
}