{
  "manageEntity": {
    "action": "Update",
    "entityId": "612535858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraj63wlgnq67drw42s3qofu4umfqozewmxqxdq2fz7is4u37mbd45q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":9733393}]}}}",
    "nonce": "0x9afd1b489d60c236c599bd2908e018acb7b5190d285f7e429237eefee0106081",
    "signature": "0x8d49decf23fdf545638014e63b09e50ac03191b0745d1df9e62e14465b1e0a733f2a0800ee36ad277185463a32538d7e037a0a17dc30c7c88e28b212c1a8ab021b",
    "signer": "0x473ac84E91B21C4fEEa96a0742db8bAeDC7F3A5e",
    "userId": "612535858"
  }
}