{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753712",
    "entityType": "User",
    "nonce": "0x87862dc6d72d1106b2b3458a0a8dad312fd3668619e288add3cf4d0c076c346f",
    "signature": "0xd99c6f7a421eef9d3198597f92cf0147cf7d114083b5671de683783e08641d525efb9a708866f2f2958e7f530df44b65b9a514c6bf69193f37cf582b4328f8c21b",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}