{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "742786650",
    "entityType": "User",
    "nonce": "0xe78743b88881a16702775b34aa0e7d53f1f42fb14b4f20a2e980f3d2992a87f3",
    "signature": "0xa6bd01b64b8748a4d023c8c41cf81bd3837e1fb70e8c05cd3cb921f7eeeae58840269f2a6222375e03bad6bae367f059e157927ae176f53b6865ebd2bf811e1f1c",
    "signer": "0xA52B9e674A818B932d315a0Fe019A6909c34856D",
    "userId": "425734068"
  }
}