{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9dc0ab3d655b5850c1cc12406b604f80dc95e08537365625ee8d74b73dcc6563",
    "signature": "0x22c4d1e0c77e4eb2445cfc0c25cc4f9dfd734735d1d0f43c9328d1ddef2fc88912b040445e67e4ca7cca2fe470c48e5b8189b9faf8b1badcb09e2f1a73636af31c",
    "signer": "0x766383d317Cba5FC7819ecd3E1381C0B41600b30",
    "userId": "855744457"
  }
}