{
  "manageEntity": {
    "action": "Update",
    "entityId": "45865194",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1242953f8d83d16f564118896fc71ff1d243fe9cab2e035969b37f0177e59451",
    "signature": "0xac75447dc5580db9b71c0fc04daa0d8a9366b7412e0db2e529e205c97ff60ae013f82c24fd93c34cb1262295ddeff55e900467618b7803fd8a605f1feba11f8f1c",
    "signer": "0x03bc996D8aa54c356C312A9E8a34d7f1168C957a",
    "userId": "45865194"
  }
}