{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "776994971",
    "entityType": "User",
    "nonce": "0xc017f8622efb906048e18e4c4b73336cd7fd9ce73973ae0a322d185da05cd74b",
    "signature": "0x7ff0b111fa885500ff4b1eadd7b65f47ed92b2863b386d65efe2b466f1dcbb064eabe78963d71aad3d7bf73cd7013979761f3afc377afc11a554527d9d999e3b1c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}