{
  "manageEntity": {
    "action": "Update",
    "entityId": "279338592",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawiajpocfezqvq4c2r2gxvxmnlb6vmx2c4yfe5kyltk2psr6uldhq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1330899874}]}}}",
    "nonce": "0xaf3283c2120de3ddad98821b87f1456d295a204787add2911f67fac8f911f53b",
    "signature": "0x57943285faaf4945ba65301e768b2eb5d35dd48d6f9719ff9e8c8a41acf0fd826a09f0b0bb78ff6c1af880826dfeb26f67f545193cfbbe0e06ed146b95227ba11c",
    "signer": "0xCa4b5280477dd345E5dc2001EbceF7be93Af19cC",
    "userId": "279338592"
  }
}