{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298795",
    "entityType": "User",
    "nonce": "0x5b00c32811458d06f6e92d7fb2f96203120af98af9f4a9022061c152a83df469",
    "signature": "0x1f5a3d64c7451015201af36b8e610ed28d4a3ed039ba339bfad419a5d3609a184e79db2f22bd332e4a7c280861357b445ab2b1c67094c547de25b3179b1ccdd41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}