{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "498227",
    "entityType": "User",
    "nonce": "0x50f39c6acf7a4d6a82df76d40207e10ff8f237dde928415c01b118b138ca5600",
    "signature": "0x33dbc1d783af3c09642708ca75af7ef1cdf5268e4bd1462ea49948d5cc97b6ec02770e48e9804912a653beeb2adc73ad647a0883ab9972333a66941ad47a73381c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}