{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "653173478",
    "entityType": "User",
    "nonce": "0xd154c2577221393cfa4254d144c8d7b2f4e2197f43d770aa622a9f412860d752",
    "signature": "0x63ff049b17d2ce3524c0bdc6ff2a3134616930e47236456ff15cfbf914f62cd4610cf38093f0d663351d5f9b86689dca602a47b131180f09e2b2d496062e1b821c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}