{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53904",
    "entityType": "User",
    "nonce": "0x28315da71b8fa25b892008d5691dbb1390b47c5413e8bbf2b722f74987ef47b6",
    "signature": "0x15ce279a84319cdd20c733700ec098b88f6d4c2155524efe59360edce83de154355d101da5982dd7169ae9a3740b24354e9686da4bced8d56cee26bd272192dc1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}