{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "630620",
    "entityType": "User",
    "nonce": "0x7272ad68445500777e519525853058f8e13b9a4a6265dcc1caf4afa0e42ebf3e",
    "signature": "0x833bf7f516e3d98771ffb46aa4a9638b58c2ad1b45b6a7ca4dd1952ed15bb83e797dd951c314407d31cd9ffccf55a96ede55c5d2c8f19ca369b9cdcecaf376171c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}