{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "352202",
    "entityType": "User",
    "nonce": "0x2d5f1c1778050cf86f85ad6b74b073fafb2517512107c2e980c6c5fea05c0626",
    "signature": "0xd2ef90348c34e7b81f08000a9ad5d555ff7eb2ae2e9bf29b0a44efd88718586f30d052fd0f360d553fd5b90f2d1d3054eff3e433faf970f8bdb34cc85e00b71c1b",
    "signer": "0x64b5D065BCE2ae4eB809629c32e7C75ec91cFAD6",
    "userId": "513910447"
  }
}