{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335878078",
    "entityType": "User",
    "nonce": "0x1b7f5b8466e78bc4c6ccd4fc4e3a3a6b0fe54b3a2b7cfa91ea55a8895aa341b6",
    "signature": "0x367a4b5997f49e45d35a247b6a23d953e6f95400f29a482d92592816cbc98801774fb483ee106aa5c9dcffda38f81f5fc3612790b1d4698ed3f7a5967633c1ec1b",
    "signer": "0x80a0405FB3B9d86d11d9837558C400BE65BE42a4",
    "userId": "464100900"
  }
}