{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234553",
    "entityType": "User",
    "nonce": "0x1d919a2dfe0ee892515f38881f5c06982668a71ce2cb676daba47aae140bf0e3",
    "signature": "0x98c37792a0f6a8d262c340e0aac3bf6f95eb4efa8d1fa6f7055c7fed0ee1ab4c3d821d838a982bbbc609d53e70b33c017a379e7a852a1fb482e7dbdcf259cc491c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}