{
  "manageEntity": {
    "action": "Update",
    "entityId": "307156675",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x054049bcf9fc4c597ac21e557c7a4a68650804f5ac0e67929da0a3c160c98c81",
    "signature": "0x892abad1d2ea76cc55e3a704c51c3218da49f43de432fbe6bc0b52bc412276c66f6779924206f9a0a2b1a7d845bfafc9dbe9fec8ef1c1ac1f42f7433801921d31c",
    "signer": "0x0BbaE3b1B763858507f1A953DC2f9Ef8343268D5",
    "userId": "307156675"
  }
}