{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0x87a275797dccee67e198514f3cc89aa8e93dd95727631e9171ebbdff1dce6221",
    "signature": "0xb82dfa5caf6aa6c3eb31a7066f2c976b9350cd7206e6b97dcff336a2aada8a400f79e3da936309e576b1609d426d82cef9c71a4f47081348e2d0039d0e4619a31b",
    "signer": "0xc74a5C0B76bF95109EFE2119058182fD3D75EA63",
    "userId": "222972690"
  }
}