{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6838510",
    "entityType": "User",
    "nonce": "0xa6af49cc9301215184493a1b36e640a26629557a1db5ac6798db600cded85dd8",
    "signature": "0x952bd3de3fefa1660ec1b4813d9c4fd6635853956045df52c1aab37009d407d91411e346e50410c1db8f78f1c8790ddd3ac0b0140702ecfb73a52134961311cc1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}