{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393873",
    "entityType": "User",
    "nonce": "0xe9c69d4b22e2078cbffcd1f104c8973f36873a4ef3ee0317df32ae846c1455ba",
    "signature": "0x27552399af524e7828d381f92237a1bc9a15904a399db52b20e351b987c81b9123582edf62e111497314182b40a222c8a3a7b89c1da793ea6b4cd939cfe414c21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}