{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681465788",
    "entityType": "User",
    "nonce": "0xb441439f4adef9fc9975721bf8a7a40fc9bd1216ead1a47443a6f9e528228cf5",
    "signature": "0xe40d9c0bb99d0858eb46de84aba862028b05776ae3c6835aa7315aaf48c9f19c396efdf67b24eeb9df0176d9bbcdf26540dc0c66bc79ac520cc13a46f09a931c1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}