{
  "manageEntity": {
    "action": "Update",
    "entityId": "581768610",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc5e4bad1b61715d7b25ede9ae3c7d8d8557b3f4fa8f7429f1be4c3a55eb69d40",
    "signature": "0x9165484800c34902f91c90ec234cc2cf1529354f749696ce511b62f85d76c9e907731f31f9c83d09a0da27e31420ceaa5eb59a5a8ec1d2290863db692824b32a1b",
    "signer": "0xfFeCa83dB8dF528813049668B3F3f8b38017fc4e",
    "userId": "581768610"
  }
}