{
  "manageEntity": {
    "action": "Update",
    "entityId": "646161559",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x04a2ac812a69753546135cec0dde8333db1c083b73b930023a02856116551b5c",
    "signature": "0x7ca6a58490c4ac3fde24d951b77e9d97a3559c3fdeda8fd1af278d08fed03b464e43d86cce7d4f99a26301464bcb20133870204b1e397eb05752919302796d541c",
    "signer": "0x73760064D08e854716c13081dE151D63b16b2Fb0",
    "userId": "646161559"
  }
}