{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "641892598",
    "entityType": "User",
    "nonce": "0x54d81d105d14031a4ad19592bc2dbf1070d94b83d7ed0492fa331ac8262b597c",
    "signature": "0x594d1830b1de039b02d02e93b8c8abbdc4e91ef7660c29cc10fb32c77c3cf3fc4fef0d79513d594b6ea884edb610299baf8cff6b65a2ae70740d93a74cfd96291c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}