{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7db73fd7d4002ce2217c99428d1876941c482bec20ed7c804e7e9b8b77802ba2",
    "signature": "0x6830fea8d27bcd2e6e3778782e26553aa6eb2c48a98c2fc957194a9e091d80f169e43d7379c44313769268025e8bff466a2f014828707f23ec1d5aebb6a7ad081c",
    "signer": "0x4bA147831f8ab07f83D8BBc490A1eb881a87845b",
    "userId": "242887568"
  }
}