{
  "manageEntity": {
    "action": "Update",
    "entityId": "300631984",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierao6u45epwt65elihvtysvcwsnn2snkgxplfxwcysn4zwkcitmvc3a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":988255634}]}}}",
    "nonce": "0xfc8d2d72120fd88441de92907b2361bd2e63c4546c0670f515b93d2a310ab34e",
    "signature": "0x86d51e0e107ae9f7348656b481b2618c5ed5c3474c924603a5674e651223487152f63e4ca26aeed89fd0b82e76e033e61524c89e547553b1f2c1576b5262bb371c",
    "signer": "0x9e70f16e2cf53214EF1E8eDc0397d06f589F7d58",
    "userId": "300631984"
  }
}