{
  "manageEntity": {
    "action": "Update",
    "entityId": "521699858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe383a11e03410fe6a21845b090abb41bf892ef3e5f0739e18f1cab633e7c03bf",
    "signature": "0xcfacffc3223820d64e5d16fc54c56a2d42e06992a05fb55590e0d9670d5b3ba81a506656f1e87ffdd1b02108b6025c63f9486c432d7931fabfc316971138ca2c1b",
    "signer": "0x26e5edB5490F2Fa4897626dD634f29302117aa7f",
    "userId": "521699858"
  }
}