{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "23210771",
    "entityType": "User",
    "nonce": "0x8dd22dcd13f3098857d398166b9dc920fe739f8d8b228b3a412604bc060a2700",
    "signature": "0xb15aa7a685ee17f317d392c33b99246a2842c3a6760cb29e1b7c3954266fed925f7218b7d3486e222b0e6a23b5c7bbb0b4f095d1e87a69d89b825172df69f1ed1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}