{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54017285",
    "entityType": "User",
    "nonce": "0xa4259a4902b3e7829bdbb1be67e1fbdfa89de2bcf936bb1bf7c321e02d8fd3a4",
    "signature": "0xf5a3bd4f0944024532271ceb4368bee440096b56e4b28e7c997622f25e0c49065f464d6200711d6a9ec304ac0dbe3421c9c1e59cc6314c2f1b279a27605a8f131b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}