{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1d3c203e380fc3628ccac0f7680ed07449ddc65278f7f2efcd1785685bc6e785",
    "signature": "0x6d2bef004c51e630a45ba62c3808fbc281eeadff94dddf0f339f5b4dfe2367596552cabac78de4d49f7632a8197c21a0ad5aed8ff84396a9ef1ec7b9eb6c0ce11b",
    "signer": "0x249BDdf33875E5b4998Cba7767bc9B5612Eb4152",
    "userId": "399609674"
  }
}