{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "519340031",
    "entityType": "User",
    "nonce": "0xeb73b6841d8bbf475bdfbe7c0095ea678db7be9c302481e1cfe07e5cea82cfb7",
    "signature": "0x412768a680201e5e71c0e592514e7ed179f2b23d709aad7092e9d5b048975a440b45581481dc389d2dcc1a74245a23a5c54c8d65e9978d3875ecf525ea832b7d1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}