{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648816889",
    "entityType": "User",
    "nonce": "0x3c638df21f1773652d74dabdc73532be5b3ce057e87e86eae0d5e366c279e9db",
    "signature": "0x848886a74b123c13b1a9e4d313fb35c2611b184947460ab79abedb9dbf31ea645fbb5ce1922cdc34079e202d26d46927598c7a7491d5f351c600ee5207e164101b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}