{
  "manageEntity": {
    "action": "Update",
    "entityId": "583264378",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraz6tazfkdiea4fxaehobbgk4talpgwnhkpobgl3h5xll2ews6larq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":643838207}]}}}",
    "nonce": "0x0c1c22044620902653b38eb89608d0f5acff36dea1a965a84b5a3ba5d752cf6b",
    "signature": "0x1b2282f992ef514e8c3709cf0f33389e2ae06bf5d5a63be6a34a25078280b78a20d441c4837290324f2400a87f85f1d55e18a99ea657604cd6a86a6e1d30be781b",
    "signer": "0xCC0d2E17031Bb2a4822bc4c54ABE3a667ef3D494",
    "userId": "583264378"
  }
}