{
  "manageEntity": {
    "action": "Update",
    "entityId": "378116426",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraotnk7s2zcdm27u7jpri2fq5uzqtxrvreqf3baizgeurofwtdhrka\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1212826134}]}}}",
    "nonce": "0xa6eba0fc92482a0deffe2ebbcd56f09127e97f20ed2708a15d52febd842800c3",
    "signature": "0x8537363f56274d4b8f2b58296f6c9e3dcaca9a04f61a8184ef081f0d17e55f997bc0492e2ebe1b1ad71c7ae85f15cef4ba0983896dbb1027c4d52b91f3d0cfc01b",
    "signer": "0x58F7A91c6Dd51f5f377fd1a44835Cdc7E86DbdA6",
    "userId": "378116426"
  }
}