{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "844588084",
    "entityType": "User",
    "nonce": "0x66670fc49485b5fd16b718e99d493536d88bc8b8a4bc5edd69faf4bf9016d77a",
    "signature": "0xd6164c1bf09ba2d6861eea16d4be8f6b48b8908dd3c63b32ea415d83df256c6d52942405d42b73422fc23267adc3a5d0740e5ea0cd2e46c581b0d7842d2adcf01c",
    "signer": "0x7D273271690538cF855E5b3002A0dD8c154bB060",
    "userId": "1"
  }
}