{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "237640",
    "entityType": "User",
    "nonce": "0xfc570b79bc4dacb9adf291770da7b6598b5a0ed3790278e7710f9485bab47e71",
    "signature": "0x23049b8fcc5d99c27118d8839a2750da81ad2d150b6a63e709c1e01e53c5798970c6762a471c77067538d07139a5ddc5f0fa0601a0fb9e5ced6bcfbf2e50c1321c",
    "signer": "0xa3C91a44f620f0b95468bEC359f89edb95AE3cdC",
    "userId": "904405512"
  }
}