{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0xae9e1df470b1ba02060feceafff8c3d5f1740c78ccc10266bb1a7e30310cb3b4",
    "signature": "0x5e6948bd40864d11b2a7185e0c5e4514a9a4459d3a8268e8571b84cdc52f7995028715fd30127ac1c4646ed9ceceeb902dca202d2f85307329282402d10af60c1b",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}