{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0xe457b32aa8802f5ef9b13498175ffdcbbc35e086745e11c29a4c735e295c8a38",
    "signature": "0x87f8f8b29454a8f4309e815ffb760e28e37f80823312f2dd1fa670178dd7a06c4a428f5b3065333fac33e77856ea2517c2352b05bf292df84b124932b4c480331c",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}