{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143331",
    "entityType": "User",
    "nonce": "0xbf9d7ec0687a4946208238083cad0187641f714ea90ce9c54ccd1a61d4a055e9",
    "signature": "0x7b6a2b6392b45b3e24dfb7d260a87f15495ac1628c261b9521773374edf9c6747f9cc49de186617ad4ec4d86fe3894a51968adf314a817260ccf116e6371fed21b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}