{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xab5273f60f1e6833ec2d0f8b97a559e3b2a5e816e0dbf75ceac57ae6285d36a0",
    "signature": "0xa2d6af2fd7fe606e153fc5c3cbeb0a979df467c90f29a3cbe6c950174274a5a22632af5369c99eabc3441f771b46a80a35095e4bdd92ca9506df964deb4629e31c",
    "signer": "0xA4726dDaAF2af20D291A670299DaD1375F847b41",
    "userId": "987235245"
  }
}