{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x647e1ca97d132e7e64d23900013a3d6ae6e38fd407526e647bfc6a99dcd95133",
    "signature": "0x1c98a49654edd6a39d8d448eca5a245cf64d0b18b59792e94a9676436cb2bcb210a79664be27fd6bae2506f378fd981abea5714c2c8aae1b20bc56edb51330aa1c",
    "signer": "0x8802A88b9EB6Af9dfa0553CcF32fd9a231Cb7b5B",
    "userId": "417951015"
  }
}