{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "529409199",
    "entityType": "User",
    "nonce": "0x0f4dc7fd44995fb08769d548246774e5cf8a725f8a2de28b9c97c5efa9a88f16",
    "signature": "0x0de2e3c637dd1c7c63de58531c2acdef3404a96c15465fe4f1b90227234adfb9229c5f753f7b82b36ef928fc7dedeaa03a1f395540d689757a345132c074e76f1c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}