{
  "manageEntity": {
    "action": "Update",
    "entityId": "579726392",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraz3ncuo45ahptsunt5nnlrbesmzf73xna6byzxugslegnk3cx6u6a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":147488032},{\"type\":\"playlist\",\"playlist_id\":305796788},{\"type\":\"playlist\",\"playlist_id\":974101746},{\"type\":\"playlist\",\"playlist_id\":1101270933},{\"type\":\"playlist\",\"playlist_id\":477711630}]}}}",
    "nonce": "0x8e12ba832a62cd64da166d8dd5fd8f66605477d6889b9b523b26e79271be9329",
    "signature": "0xd8a34c9ec13a138fea7dba8caedb357464ea532584f768c017ff9545f4adfa566585d6e8b84ea42f746bcd4498a5d892ffda29779c746ed4d261dddce9fb502a1b",
    "signer": "0x9D360ECE27645E249fbb45fC03AeF953A81031Dc",
    "userId": "579726392"
  }
}