{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x151f95fb6efccb36ca0f7aa979540b7b9d9c45474aa3e05cce831fcdd9d2c2fe",
    "signature": "0xfcaa8655dddf6a2947e27479c0000149333b59c25094a2cc3d4023a17709d5d1043287c7b304b02e17d69c918874ca2245be6eac909bf5f5e13c2602e674ec9b1c",
    "signer": "0x3EB2614B7B52b94D8f8FdF0EB63BC9226df57e7d",
    "userId": "907828722"
  }
}