{
  "manageEntity": {
    "action": "Update",
    "entityId": "374868101",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4967c7dcd9b7ee286d84053f0b87bfd4c5ce6a5c821dc66bbe72caab3a741413",
    "signature": "0x9d0d5d82279cc430c072c6868c036e770571f05d3590a6f26c2906fcd638094e73a005603badbb13c93e7f7a6502a4181e43a8bc1c2acbcbb3028257385aa93a1b",
    "signer": "0x13c7b96e121a63c71cb2eE602EB49657F68c22c1",
    "userId": "374868101"
  }
}