{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75700",
    "entityType": "User",
    "nonce": "0x3d381dc6a991657932bd31af6c1f0f2581607a3eb710b169fd04af36db8f5c95",
    "signature": "0xea26aa138d88948029cbcf1a21e0574f63409769ce5391487e7219a87ab83b165a9136e3d3074ae7e27d75f4c61ebe88806edcb0ba08e6a579119d4f167936331c",
    "signer": "0x46FCeb3B4CC66d5AA2A495C482D103Bf09Ef8B43",
    "userId": "577430813"
  }
}