{
  "manageEntity": {
    "action": "Update",
    "entityId": "418312750",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xec7ea027b56777e86bd8d7ef723fd174ce96b5da81b3c327e535cb9c8ca60815",
    "signature": "0x2e49529ddf673455a2ee66aa5a93df63d4e1d161b91c9f59d4858a7b32f90a253e3a2567ca0535374a25116ccf9ebe686876fefb535867cd4e33139a1adad3311c",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}