{
  "manageEntity": {
    "action": "Update",
    "entityId": "817118268",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieran5m6mxq5rsd453lu7un2a4z6klxbp7szh5fxadjpdllo76b7d3ca\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1290339850},{\"type\":\"playlist\",\"playlist_id\":1843161340}]}}}",
    "nonce": "0x0c9ac978c81279629cccff46b602f27b2e5b229735a3563850d1a4c857e7a2e9",
    "signature": "0xaaf033e74a5af6bea372b05f37c4af95ac3c646ae7a502e932bc50f403502854632679cd6e4bb17b17bc4d244ba419c06243ba012f0a8e5d34209a18038c24741b",
    "signer": "0x75Eea1E24e43327Fb694Bc09A48Fb0265784dBfB",
    "userId": "817118268"
  }
}