{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "375489",
    "entityType": "User",
    "nonce": "0xffde01af2b9451ff8d910fb9d8f3ac260c051c3ae8acaee060fba15f38b20d5e",
    "signature": "0x37440c562da07f0398090aa8770fec6ab0600b8f950de9459caabddeab1e8c2644beeb171d6ace71bbc963c9a4de349aebc88a9a195ba7aa7b544c1fcc27687d1b",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}