{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x71e8804ebc692c21e31dd0d1d424d3dd60bd26bd04b1b2a361ac8410e6f1b245",
    "signature": "0x64dd844d5d33b2b30592312a1c14b9953e6cf9f81115f693728e6aa97febc6ad693d60361488b32924da462dad5d0c1b2593d92ee0ba754fb71598f9034b11971b",
    "signer": "0xfe5Cc95369D94e7335bc62f82e743Cb7c261Ae62",
    "userId": "871799321"
  }
}