{
  "manageEntity": {
    "action": "Update",
    "entityId": "850759075",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x65c1911326b450bd8edc2e9865d1103ce0abba39e8da4c22d7899c79ac168f9b",
    "signature": "0xd8b1b9f374523ffe2c7835936b7a9ef627875e2809e574ed1d573fa2c7f6b7900dd26dbfcdc60d501a9338777360a38b90e4a7089a3fec21eb8e4c3ee36d6f421b",
    "signer": "0xb048bD61FDCf327C9a427cdE23bbA16700E0bb74",
    "userId": "850759075"
  }
}