{
  "manageEntity": {
    "action": "Update",
    "entityId": "318203871",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe3eea0b3ee20cf9cacabc409c1f13a8c6fa4e1d98157754c27e39ef320acb33e",
    "signature": "0x31b9a9e8ae1387450dbd0459728a3430b170f1b11cd13149e59c29787859126c7583132f91eb27639b2f469aca4ea702479940f96389b9d96e2a8942da7d78f91b",
    "signer": "0xAA85251ed30cCbC6c38f711829968d573b29f84b",
    "userId": "318203871"
  }
}