{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "193798",
    "entityType": "User",
    "nonce": "0x9e7766b0f425903128dff09307a7ae9e925710d4ecb8fb96ae1b342ad573c37b",
    "signature": "0xe484b8595ef11d9ead8b5d3ec45922422af62030fdb294b4698fdf53ee2e40c95c7012380e26ee7d5f755fd534f8b0c9f4f6650890922494d3217ba6bed5b5711c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}