{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "723085841",
    "entityType": "User",
    "nonce": "0x6f54aed2cc2f11afc6b98ecc8436f89080fd98e52c749047ff980afc0ed8938a",
    "signature": "0xa0f69fbc2b932a168ef5503572ec597455720fa855ad48821c35e18e4a24a1955bfcc78d06940d1cecbb5bd053be638b7fdb222da84484326220a6a64653436a1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}