{
  "manageEntity": {
    "action": "Update",
    "entityId": "21285244",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0cc84a3a3eebb4e4b0406b389523b1e52b21dd416f875aefd29996c75233618f",
    "signature": "0x057a845ed424f5096ac61cc37c132db85a1099c1144d6b47eaea924c7cc71dc66903779c7b8c5aa86011352a35dc06173795b646b2f417ac1d3ef22dae407a7b1c",
    "signer": "0x99184440Ee6a129090E49a1c231270aBC49a9427",
    "userId": "21285244"
  }
}