{
  "manageEntity": {
    "action": "Update",
    "entityId": "137744695",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraet77ohtxhhzqemogyvp7scwmvehvq55cimk5lsdtlv3jmtk7evha\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1356007076}]}}}",
    "nonce": "0x541e4eb8be99c7933d3c9b87c4e7cb4b6297f4725e97e74f782c17fe20bef5c0",
    "signature": "0x043238964c9e0ae032e631908fd30bbbe65fee795a73d12e906834fca6d06c311be0d90b0495eed7b7fc12b58b1484b48b9918268b74d771ed0749b0e2c4ff3f1b",
    "signer": "0x997892Ba3dA104CdcAb8b169555d48E2884F6eC3",
    "userId": "137744695"
  }
}