{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13721",
    "entityType": "User",
    "nonce": "0xaff2eaf3739077934e86e5510826aafb0a69d142da7e88208edd4fd828c96c25",
    "signature": "0xf388ee384ccefcf99cbfcf28bc0616d716236ba0ee04a50f98702cf4d79d7c5612adc6b2e5b9ba02ec70658c7cf097c05f27aa66f9519909d282b7dd0f434be41b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}