{
  "manageEntity": {
    "action": "Update",
    "entityId": "771808284",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcdac52df826e543e362fffef868942d298015806b04b842b413f2fa2a1d9f894",
    "signature": "0x803ee1f79b338c4a1380ce2b2aa6ae3d0181f6c9466035b17e9f42f15150a777621fb19b4883203f59a27b1259544f14ac1f6313ec74cd01c9544152cb79ab451b",
    "signer": "0x8ecdAD7a1a8A083C14D67BEBDf3477A368C3F2fa",
    "userId": "771808284"
  }
}