{
  "manageEntity": {
    "action": "Update",
    "entityId": "408921878",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbd0babeb31eb48e78afd2b749d13c1f0630dfab5de01d5c402162f174f0e28f4",
    "signature": "0x06f6177c7fe51216913d7e6a24bc0dc5701bdd19624a2a8b530b76b410a32fce03f6f61e67691ba8b0829e4f96157c2b788dffcec0c41e175946344d99763bd51c",
    "signer": "0x14b3624316A323b3651b2b2E5935D05878DCb48C",
    "userId": "408921878"
  }
}