{
  "manageEntity": {
    "action": "Update",
    "entityId": "513100334",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralmj45bx4lwadw4kg6hc2sydrw332ep3fagnxe7vxfh6bazxpxmka\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1155126198},{\"type\":\"playlist\",\"playlist_id\":1745519063}]}}}",
    "nonce": "0xaa42784bc71db2328fadc55f27dc6fd2061db564650a8dbdbfae4bd832fac1f3",
    "signature": "0x57ef9dea48bb7fd22d8d3828e0178272dec219918fdcfade60eee8bdb69be38a1e4fe21bbd51d2e1749f147f14eb44e964af8a2cc5e61ce9d39c353ff1ef0cde1b",
    "signer": "0xEFec33FF65644dee8EaE96E99C93429330B67c16",
    "userId": "513100334"
  }
}