{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "391914049",
    "entityType": "User",
    "nonce": "0xfea6054dcd64324fd25e5f81b9dd64daab622a342e605c90c75baebc98879a61",
    "signature": "0xd75088dc57edfe9b48a15e6b01f30c9af80a006ee4c6c7572070377bc4d8d82c33df0c1e97cdcac7c79b7f993f66ffba3e62bc2d19283928cb398384dd32ecc51c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}