{
  "manageEntity": {
    "action": "Update",
    "entityId": "298768416",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbdb4b135b108b69d58a570f016c4af9024fd95c3f3990072db01fbe4597e5f4e",
    "signature": "0x951da32139d700b08d4ddd7fa032601c5135e74977aba0b9dc61007b8a33b92b7445bc3d5c9b8d7de6f716bd98e628e0ec029aa1339208e64ba57b44930375161c",
    "signer": "0x9FA61Ea6a57cAA57a0FBc08250a84C3b6765c9bC",
    "userId": "298768416"
  }
}