{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323403",
    "entityType": "User",
    "nonce": "0xadf62568e2f09fe03b2022d6c9d3d36742af66f230ee3be82c3886abe7bfd500",
    "signature": "0x92fe6e15e1ca3de86f33a4defe59ec6d4e777d7c9afcd7aa75a4b158e4c8edf676cbba2a8d054a1feafa1d03637eafc5454cb20a1bb9412cc2b8e12a38ff431f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}