{
  "manageEntity": {
    "action": "Update",
    "entityId": "300092437",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x28688608767a4fe00c9ee1915a42c281b4d499128d3594f6dc9da09ce4d922b3",
    "signature": "0xb5d3cf3d115db397b6dbf9ffa6f562743bc6df7558da79dbb05528e519df9e7e34ae5f563e2f7cd515782d315c793e7def0d645759a272f0d81c454e099b1cec1b",
    "signer": "0x856ef0FdEe1Ae5e43a026F00e4Df68eAc6Edef55",
    "userId": "300092437"
  }
}