{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57320",
    "entityType": "User",
    "nonce": "0x9efc6d0bf47fc3389cd8302b12044cfd8fa44ca23c2353be6961d73a930d45e2",
    "signature": "0x8d9d891eff116aedc183f0a3fa6e0676d2e27370d7275a808640c55f22594c2e7d33a1a72875a8bb088abe128891d4ddf861b904c23940f9336a1af9dd5270fe1c",
    "signer": "0x764341232AB28643e8106bCF183A4cCc2fFfa6c3",
    "userId": "67250118"
  }
}