{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x09929d6b5570b83c392e5dc52001993154b108f67a9e9c2e4c76d7914b92f602",
    "signature": "0xc0213085f9f41b2f5d964a50fbe4af83dd7754809c53efb09452c1ed71eca78b7b1be8a6f57c3128dfd32eba83bd416da05e6f2d737784b26097f3ca9d2186021c",
    "signer": "0xaF500afaae73bdfad2Ac2b85e59D6C64dedF1FD9",
    "userId": "104017651"
  }
}