{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1855643",
    "entityType": "User",
    "nonce": "0xcafe1dfffa76ffb2db6442d3af1ce46fd694152cbe442315e3776d3376aa045b",
    "signature": "0x10487d9bcd49c72bf5f641a32f9ce3723c0afcd8f6f5787248d3beb54890881a1c9a502a2d695c1b719029a62aa0ec10054357657d1d64cdb6a94cf5390404cd1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}