{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x594bce304b3597d8eb7e24bf4f32327e7895dd31e1e332aeb900195d0fb4b7de",
    "signature": "0x950ea069d98632a92bd0a425e58563d5743c926524c873f8dc206ce846b4e29c32cec6e474406fe2ac41e4abb191f8db57775d90a788f8303f26abdd9da3993e1c",
    "signer": "0xFF852814F971e59C154e58876DA0f994cE4Ca788",
    "userId": "480222873"
  }
}