{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450501",
    "entityType": "User",
    "nonce": "0xfbd64782d54fb945dd5061421155efd78f3aa1c36fefe0508f63e58573904d7a",
    "signature": "0xb1476f25992399c1acfc9b152ce30b3224de3e21c20e080cc1e8db4f932402961fa68b0481a6b13568a36bb364e0a0692f6e33a5a37c810cf2a89da61fb9f98e1c",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}