{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28155",
    "entityType": "User",
    "nonce": "0x838dd62766df9708e1c80dddd927560a9aebec7ec8c535ffaa1baff346fdc504",
    "signature": "0x90947573e418fadec81020b11a2658f8e8f4521cd59b4ff3cf6b64775d78ed0a4ec07fb86362b2a5719b4fb829d3d81cea38dd7b6f3fd671d560cd95f557dcfb1c",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}