{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe72c5ca089a34b9aea154abeff0c0be4ccc147683315e9cd7efed68e3ecc5c67",
    "signature": "0x7b493ddc1d118adee628b7dd03ebc811e3816457432c4d043e5fbccdd464fec5493278a754796dec2221dcefb75a952e4907c66a308be4e857b5af36331b28ea1b",
    "signer": "0xE1c7611A0B67daDfEaB50b1d1e5128058367B02B",
    "userId": "498735816"
  }
}