{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x68b3a37fda22a865c9787dc968e87c33dd507888e4ebea635c3a2acbcd664c30",
    "signature": "0x3a022c9b3e6eafe9e2705e3a9bb673dd61a72e347d8ed2b9b4f352cf7024f16f4b460f86b502c26cd7908f29d10c04ace3eb4291d57161dce67e74e5569768701b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}