{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xc333ae17e6201f74f4a35a97ed7e44365dcac8721175e78eab2a6769cc0904e1",
    "signature": "0x4fc9652d6ccf794841b399c45d8ae1c486217ce1d7a43a98b88b765152634058679f1450eae4eb0394c258b0e1398cf5db93346751eabaac6f9ebae4e9ab1cff1c",
    "signer": "0x335De7e0034A8f810E7E08E80cA51DFFc83FAAca",
    "userId": "714639318"
  }
}