{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "617072743",
    "entityType": "User",
    "nonce": "0xa4c56ef45717789623643c049c7154c4b1aa15443973a292ed3f8c38417bff35",
    "signature": "0x245eec232c6757830edd04e280afa00bdcd1219af181501fafacc73c4fe0cd0d13bbea9985552399519e09cd8644cb82844d74ab60448a26b6ab4451fd5cca1d1b",
    "signer": "0xb1E0638c81F81cc7156F345e67c2CD44b848D37c",
    "userId": "44420"
  }
}