{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309080",
    "entityType": "User",
    "nonce": "0xa9cef2ce9e02e91bb72c0b39212cfbfa02369a4146b7dae7cee4f7669277b052",
    "signature": "0xe5d37d57a2d128f9d4b565ec4323eeeba6928c8b54c2a2872899dc0858acbd367aca930e1e656b4375f08ce6fb9a731a70f530815342e9fb7f47d0e905b001011c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}