{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318823",
    "entityType": "User",
    "nonce": "0x733383a96799b9b1517289cbdfd4c9f3c1b8f227706efcd6e59dea995a231aac",
    "signature": "0x7b3f4e0ebeffa32182280e8f10c60866077e0d63acac2bf159312e88ebf0f2c7738fef6826386aa3e321ae6be300eafbd7f6df6bd9ddaf6d3bd41a3e1b53dd2b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}