{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10431",
    "entityType": "User",
    "nonce": "0xc240ce5402937e3ec81bf6ad1f3e753fc5c54e3e9b40d3053ad9365b543b9cc3",
    "signature": "0xfb26e127f02c3cff8cd8e4f000eb05f07e699048559b79f5a79dd7d492d4e3c3379d5eca2457a178082182e1e5c5763217c46d24c42c86959b5c2dfe11168f511b",
    "signer": "0xE8Ec1bAC66ca573950B30a9B5Bff2793f9CC5C29",
    "userId": "734516636"
  }
}