{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343663614",
    "entityType": "User",
    "nonce": "0xcea075afa20524e577ca70f16c0581091b7b5d150c27f6853e8a4fb175450f5e",
    "signature": "0x0ba0ca115594d2b5f056f415aeafbca6b626ba618f80de24ab15dadee2923fe313d219d6d8f888a8db2258e3b8f3dece70674c412def5249fb8de3c01c8208421b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}