{
  "manageEntity": {
    "action": "Update",
    "entityId": "855403",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x983f2f09c35c93293eff61cf5edcbd614438b77576dcf50e2bb0bc9821b3b12c",
    "signature": "0x3a9194d08b8976f6b36c8eaab9572a9fc1c2f5ee2c3598e75ff627a60bd6eda535d2f6b9ace38f3fbc40ce564af9898b5e01529be42deaa463e626f32fed46431c",
    "signer": "0x8C7bee798c0AB93Df67Cd00879d67b02274644CF",
    "userId": "855403"
  }
}