{
  "manageEntity": {
    "action": "Update",
    "entityId": "369145976",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierafekvvcke23wuwqzrtkikibiywxt76juwka5xlqnctgd6zcm7jx3a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":273196207},{\"type\":\"playlist\",\"playlist_id\":1518528768},{\"type\":\"playlist\",\"playlist_id\":1011788672}]}}}",
    "nonce": "0xadac842402e9cbb2442527906225db6823418d67e1773ebac1bd18286f0dc91b",
    "signature": "0xc4398cb38601508f0038b28c1b68fd9489c90be00c46df534c0f016d702348f14c2c20e60c7d8bbccfaec69bb2a23a88c03beb7e74893d50e6d9398b77d910dd1c",
    "signer": "0xb904172F0B95C0ab98D43c7046A45F21C1a46b0b",
    "userId": "369145976"
  }
}