{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "981716494",
    "entityType": "User",
    "nonce": "0x46b1e2d287994fceb84b1f4838d1dcd076066fe4af446fa161f05a3456a2f751",
    "signature": "0x88f879d4c7014c2214a2574e274cae13951c788dc7792daccd13252044a301e307f500fae86d69b8cc22ef37a8762e7a53d4f13f0832b48d7625b6db9b1c8a271c",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}