{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2599",
    "entityType": "User",
    "nonce": "0xc8c66bf4a54457347cb11dfabf5781350b6ae75022aafe63c67a6bf8348026d8",
    "signature": "0x7fed3b949b5d82bbb8a6e2bf6c811c965052fc9b0167da8cf0f7a169794d33ee17033f9bd6d14b8e81c999bae7ab860a465a1d53f6c348d8b3d3b939af8982fb1b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}