{
  "manageEntity": {
    "action": "Update",
    "entityId": "407046354",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5bbf8e473dae15f066a2df20489378040d8f4ff6a8a8543f4d8bcdad11b24bbb",
    "signature": "0x406f425ae681a6c4c073d9392791e8e26558fb22b0db6b1ac19f21f39863b1c7337bf6ecd1869124a3b56a297acb1a897ac7e5f1a631d00fd52848a81dba42f41c",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}