{
  "manageEntity": {
    "action": "Update",
    "entityId": "895320376",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierasvjbvssloesay23z5vtynl3emeljy562y3vbekiui667glnbpaia\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":23102}]}}}",
    "nonce": "0xe2434e0b0d0b1bc4c0bb0fd32052ece72b4021bf50cad328d8e67c7cf44572bf",
    "signature": "0x4497443ea68b5383cc158c737bff640e4eb179b397268721fbba7cdb271e218641715407fc89f5c2935a01a0ae9c06eb4266bc8d60d2f7f0a4b3c25b890e37171c",
    "signer": "0x4963957F749ebF68ebED80d2d13fE1848632f75c",
    "userId": "895320376"
  }
}