{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0x14eaaa5199cafb085f5f8107058cb80e09862163148d78336604f2aea08cd718",
    "signature": "0x688b6687b007a1afae9778f783529fe5229223eda69a383419ae42ea215899700e644db2d7679715aa2b6f4ba0d57694fda98366774d139ae12b22c79f199b2a1c",
    "signer": "0xDf325b3870fdf216bD42916714b1AC2FA2D27425",
    "userId": "2009913"
  }
}