{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "529409199",
    "entityType": "User",
    "nonce": "0x5e3f2665a0395216d7703aae1f405cc6e9a4bfd46a3f4ef9192901c63b0970d2",
    "signature": "0x117344540920204dbb0a233554b33c4ab7bcce5c9baf5327ca49405ed997c85e211875233ac16add6c69b2a48730b94055cb5d138f038ea0ff2e9a285759ec531c",
    "signer": "0x7Dc5480547abF67B7926d1c24AaB5d7BE7e0c965",
    "userId": "727950503"
  }
}