{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1743634",
    "entityType": "User",
    "nonce": "0xf2812f2342143a6cd30027dcacedb4f9408096cc4a714161fa9b97f57e21f396",
    "signature": "0x8b9d820a6e9e5bc2745113154fdf027d498a848b9509e15b45108e2b57b1b1d703207e42f3244ee195f363903e1cc114ea99e6c0e3db6438f120fe4b75180d961c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}