{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12728",
    "entityType": "User",
    "nonce": "0xc6ea50416a4727eb55f2d5a218cee5ce8607d9d8220d370ce42eb0616fbc8ff2",
    "signature": "0xae380bf1aeb336c087336f205de3d8666411c6c37aa010779355508483f187c0135f7db0c8ce268ab719191fc02ea18a76cf8a80d563269a931e7034c35b82861b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}