{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "888232211",
    "entityType": "User",
    "nonce": "0x3b5890d1b3bec3ad6588c275453f6ca55341f9b0081d41e625c7d5b50f74d9b1",
    "signature": "0xc171490a168349b93c6d6734c326e63a02c91f28f5d404d1d240cccbb8f3b951406a70b738b6b80d8407a49e4d8852fb42da2c953533a9c0b1c201e00f9b0ae11b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}