{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2749",
    "entityType": "User",
    "nonce": "0x31bf6fc6ace0a16b483e4708f8729a5a23e69085ee164fc93571cbee6f84c9f4",
    "signature": "0x0fbbe1de2af7c740cab0a3ef52d4bcf16da9ccb0dff9c006e8bffc419d17e76f262361ddf26bf38ddd6b227b059b83b5bd93d1aa9f4aa7df9540363711fd88171c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}