{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x61ea491537bdf0f79eadaacb108818af48823353cfd4f1e3b011a174b5fff4f5",
    "signature": "0x900d5cdb0636276b4eaf4a52b35d3644577ed6f243d4ad43341b986453b6923c5abd616e7990a0ffe603f93ee9e2cf2e81cea52309a93cc742b158677544c8ee1b",
    "signer": "0x91c65041da5a7afC1376dEeA5E1F8c9Bb5B0c0F2",
    "userId": "92589390"
  }
}