{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "372771",
    "entityType": "User",
    "nonce": "0xff948e6ee5d14f6a8f4786fb15ba1167497f4e56eafe8dd3afb0eb7883c4fc10",
    "signature": "0xfcd4ea6734a289d114489af7170323fc6360a18a684d9b9a5a3769a9e53061682ebdd2d2213927931e6b0bb30bf9190c3f8e567b2a88dceafd7f015649fc23b41c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}