{
  "manageEntity": {
    "action": "Update",
    "entityId": "51640517",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbaffd531acb1a810c44dc8d0bdf08d5932cb83e108eb86dea0cd9203bf4693a5",
    "signature": "0x878d8bec590e3f0f5176fa56de7b4e9898b4cf7569541a73159f02e88402f46441297b5d579e60496e25f0a0864d6dd8985c187c40786b8d690d81fefeaeebff1c",
    "signer": "0x85c938ac05d0E194f7347ebf59d3C76d7D7a9868",
    "userId": "51640517"
  }
}