{
  "manageEntity": {
    "action": "Update",
    "entityId": "379990460",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x89373a6cd46b6eb080795ee59e319485de76c118b2a8aaa2ee6949968b123c96",
    "signature": "0x918c720fb6787e25735818439ef2f85b707d1632eca1e96c65fb6aa1995f636e563fff6f5e46a372436ea1f87b7fef46c3f4336afc9df3f039bca22aa0a23dd31b",
    "signer": "0x5718D45728a6AB3eBAB075D945D2Dc5e674FA15e",
    "userId": "379990460"
  }
}