{
  "manageEntity": {
    "action": "Update",
    "entityId": "45511108",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3a7091c0e71f694cff6591162f62fd6dd2c356fe9b3a11d15faf4a00252c3868",
    "signature": "0xcb19ccb5ffb6cb05c64acf89ac97081b146198487ce827c480f1dd3fb06fe1d2145c6f52f1bd322e5cf89bbcc418791930f14410ee5e7cfc0f28a6c0e166e93f1c",
    "signer": "0x4B140b61EB41438Cda0Dd10473ad1334309C1b97",
    "userId": "45511108"
  }
}