{
  "manageEntity": {
    "action": "Update",
    "entityId": "300631984",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieramdibgwspywjelramkln4hokjaohoe4aw6ukk2gmkgrcgnxmqbp2q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":988255634},{\"type\":\"playlist\",\"playlist_id\":2064592875},{\"type\":\"playlist\",\"playlist_id\":808660166}]}}}",
    "nonce": "0x4e2ec24f9e98fcdf2523e6d115c417e08f08e68fcb8a7911662fe3a3f9bad11c",
    "signature": "0x0e817890ebd34410dbd4d4ea977e9457bf8aa07fd596ad147deaf0f29d6c7e19443f96401b3f84a770e36c58a90e609c7b99dc974ddead27169d246afff735aa1b",
    "signer": "0x9e70f16e2cf53214EF1E8eDc0397d06f589F7d58",
    "userId": "300631984"
  }
}