{
  "manageEntity": {
    "action": "Update",
    "entityId": "370658587",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraljhfgszaicrgbrdv462ncm5flpu33ozrbktjpbvjtjhzamso4n5q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2113060141}]}}}",
    "nonce": "0x68ef3d4353b10f3da2676a58cadaae62c549bc75bdf3f7977a3b73290651db79",
    "signature": "0xabb156a098e147cfff76282da2eac586248f4a6cfabdf8160b0c89617ba0c0bd198fd646223385f1591a050efe9b868e7a581b7a5320ba414b7163af70d2d09e1b",
    "signer": "0x1817FFD7b8CA5943F7DcDdf3bcF2B91D081eC078",
    "userId": "370658587"
  }
}