{
  "manageEntity": {
    "action": "Update",
    "entityId": "190110950",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xac28a1f1d8ed4884a3161c4d67c72d9ff458b5cca83180a43f753d5f5b27d2ff",
    "signature": "0x20d505757307f94e2643ab64850add8027298def1e0dff419904ac984543c19e0866a497f88cb8723532c731059c0f49308e108d6edad482ba474dfd5a1fb4501c",
    "signer": "0x7334Fcbeb0A727477cAC9CC4B0ADc9bd7bBE97f0",
    "userId": "190110950"
  }
}