{
  "manageEntity": {
    "action": "Update",
    "entityId": "959312700",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd22a54a749420be3902df3f7432afd24d8f26085cc4ffd24d7041e5e15611879",
    "signature": "0x4f52fbfdd53a770c47fa0e9ecfe2c5953e997db9410fc6149fa1374a97ba760328f9b97549954e96d6bf0385bde861de8cafba166a7772798db30726ed24b5c51b",
    "signer": "0x37df5cB5691fb1e7c1E5Ea486F0C2FA532a6c2Bb",
    "userId": "959312700"
  }
}