{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "219968466",
    "entityType": "User",
    "nonce": "0xfd112b4e12e40764651502714a9e2eda56fd3ff1ac388bb87f7c98b299d5f37e",
    "signature": "0x7f306e1496a57dce965c715ff1d59ba294e6602b9a1119dec81d1db81441153f3251af2c7f88b8c43369df029fe698f9d0abaa6c933fb87d943dee6abecec2e91b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}