{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x12416ef2023407de5cd8e9e2c6c24ed7b489b8f63d863dfc2867ad59395e111f",
    "signature": "0xda476f2e4a1592ef0601abf8ab592da702f07afb79547750d12a5fc6540a8e2f228fcf49e6292e76a5252aaee4b912fe338d8ae054ceac3f76540368114d8b2b1b",
    "signer": "0xf0F491bE628c3A5BF3904d1Ae68bc59234407951",
    "userId": "560417026"
  }
}