{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0xe9dc5eaa70654cd142703a009c242e7e6353f826eb41e7ed3e44691e2fadf050",
    "signature": "0x98278be82e4cf7eb100f4e4a62b71453cefc6726c034ac009dae2c5fcaf3e2b06178ed8522d89687e4dcbf405300eb55e8eb37227a4a7c12adf57889bcf765611c",
    "signer": "0xC77FC375F0505f98061bDD371Ad3b99D16525d71",
    "userId": "187154748"
  }
}