{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101990",
    "entityType": "User",
    "nonce": "0x879be0f92034c877a76aef672ec66a4af48005e182766365d4a4906faf2c95f5",
    "signature": "0x008594fa355b05de0705799cdeb181fb33d0cb6e26f7080a5a2693e66372f4ce163df690e6f4dfea866387f12e201997ea9892ef92c04ec452c8edca8d34a3371b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}