{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "820738042",
    "entityType": "User",
    "nonce": "0xc74f4f55bb73fbce62d6ec07485e6767bd87d6a87822e4437f5ab08be3e3ed2d",
    "signature": "0xfc6d251c8e857aa725a72b11f3be7283a6c1b53dea0a1e02aa03ec352332e9c367ca1742950b9eaf79d1d0316cf4329f8c7b59293d4a0f83bca6e122adbcd0ce1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}