{
  "manageEntity": {
    "action": "Update",
    "entityId": "28116771",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x90e45e6efc1d301b929fa706a1184594185e46260faedd1d22dc518f44146985",
    "signature": "0xcc6a8a133c7c399817da447d7520c01bd9d9dfd61de1e861838f1e3dee1e48c11d48a79a9b67bd4f0ac461fd20da7d393bf22ef8505093e8c0b63ae3e2dc9d571b",
    "signer": "0xbA5231da41B64fC270444f50999A73f927f23256",
    "userId": "28116771"
  }
}