{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77551267",
    "entityType": "User",
    "nonce": "0x451b5086f09ab46adc36729161f7a5dd21076ef05ba603560c78ff5f05cfbea0",
    "signature": "0x3e49dd8725f3a8eda3a1ebf1ef5d024f83c2def34513e2ab3c53f3cbeacd872f389d9bfc7d34ae95364db7a0ef8e5f259bfcc18494bbce79a3b16890e610d8771b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}