{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe80ca49445763f2e5d7a9c5d6f654629ac7275d1bf862b92e7acb1d92d62b70a",
    "signature": "0xa0249d8f89ec92cd2f3e29a023c6cb9a668a93d05a2982165a4e9284a11d1336793e8fddd047658d192abe6e5aa3c6ceaaf300b0def9f1bd3d983935d4b820931c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}