{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "981716494",
    "entityType": "User",
    "nonce": "0xff9c9c8bdd137065a17ddec04caabd748e3d0ddf7e6235a1963746e54debd441",
    "signature": "0xf1c8b28bcdb5e8a5f156f08f978156c0eb33f402c761438c59f9af3e40d281fd6268bf4ecdfae1a720b3f8de9cb347ecc07b7c746815e24597e8a46b810affe91b",
    "signer": "0xE4c0c73a0c0CD7f65f1bE942f8127c8753aB89D9",
    "userId": "857284925"
  }
}