{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15668",
    "entityType": "User",
    "nonce": "0xb9383460db067589d936f6401cf88e8cdd4174a8dc6ba6810cb867ccee283157",
    "signature": "0xf94f57f767da6c14c3883bf465e87fb0fd28d6f18cca743cc9a929be17e53a8a1ff33aba8464a4a6ed05023d9e1dcd828d3144a9a9d7ec1394c9178f4dcedb5c1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}