{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1037000",
    "entityType": "User",
    "nonce": "0xfb6ee1c272c60b9904b74d6ac6d26e3d0a74e76480108222b9a9b28031360b85",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}