{
  "manageEntity": {
    "action": "Update",
    "entityId": "302687141",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraiop43c4bq6e73e7c5iqjz6o2tfhpt3a5regfztughrdby67i5zgq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":259728194}]}}}",
    "nonce": "0x371f93b0dfc08e4050011aef140f8c43843a05087986e1d11aedc9fb32e8499f",
    "signature": "0x7139fef8dee65c14c95e7dfe02f001ce26a8531900872dc9e3641a2ec86f46bd26babfef21caadc129da45b5211b12bcaf04a7ec5a3b2f63e1ffc5ef3dd2701c1c",
    "signer": "0xc0f76D7a0b4B28398c597aBbCBC0ce0d51bAc5bd",
    "userId": "302687141"
  }
}